AIM 

4/20/23 

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13.  Simultaneous Approaches to Parallel Runways 

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Simultaneous Approaches 

(Approach Courses Parallel and Offset between 2.5 and 3.0 degrees) 

a. 

ATC procedures permit ILS/RNAV/GLS instrument approach operations to dual or triple parallel runway 

configurations. ILS/RNAV/GLS approaches to parallel runways are grouped into three classes: Simultaneous 

Dependent Approaches; Simultaneous Independent Approaches; and Simultaneous Close Parallel PRM 

Approaches. RNAV approach procedures that are approved for simultaneous operations require GPS as the 

sensor for position updating. VOR/DME, DME/DME and IRU RNAV updating is not authorized. The 

classification of a parallel runway approach procedure is dependent on adjacent parallel runway centerline 

separation, ATC procedures, and airport ATC final approach radar monitoring and communications capabilities. 

At some airports, one or more approach courses may be offset up to 3 degrees. ILS approaches with offset 

localizer configurations result in loss of Category II/III capabilities and an increase in decision altitude/height 

(50’). 

Arrival Procedures

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